题目

    Lazy people will never gain anything in life.  However, laziness can be defeated once a few changes have been made in your mind.     21  Many people lack sleep constantly, since they stay up too late and get up too early to prepare for work. These people have little motivation once they arrive home. Laziness works hand in hand with a lack of motivation and a tendency to put off things. By adjusting your sleep schedule to provide a few more hours of meaningful rest, you can fight laziness throughout the day.     Another way to fight laziness is to change your mind from p将0.1mol下列物质置于1L水中充分搅拌后，溶液中阴离子数量多的是 [　　] A．KClB． C．D．